CN115261639A - Nondestructive recovery process, nondestructive recovery device and nondestructive circulation system of powdery adsorbent for lithium extraction from brine - Google Patents
Nondestructive recovery process, nondestructive recovery device and nondestructive circulation system of powdery adsorbent for lithium extraction from brine Download PDFInfo
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- CN115261639A CN115261639A CN202210844930.XA CN202210844930A CN115261639A CN 115261639 A CN115261639 A CN 115261639A CN 202210844930 A CN202210844930 A CN 202210844930A CN 115261639 A CN115261639 A CN 115261639A
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- 239000003463 adsorbent Substances 0.000 title claims abstract description 286
- 239000012267 brine Substances 0.000 title claims abstract description 100
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 title claims abstract description 100
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 66
- 238000011084 recovery Methods 0.000 title claims abstract description 63
- 238000000605 extraction Methods 0.000 title claims abstract description 50
- 238000002156 mixing Methods 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims abstract description 23
- 238000001179 sorption measurement Methods 0.000 claims description 86
- 239000004744 fabric Substances 0.000 claims description 77
- 239000000463 material Substances 0.000 claims description 47
- 230000007246 mechanism Effects 0.000 claims description 46
- 238000005406 washing Methods 0.000 claims description 29
- 238000007790 scraping Methods 0.000 claims description 25
- 238000005507 spraying Methods 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 13
- 230000001066 destructive effect Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 14
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 15
- 239000012065 filter cake Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 13
- 239000007788 liquid Substances 0.000 description 12
- 150000003839 salts Chemical class 0.000 description 9
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 6
- 229910001416 lithium ion Inorganic materials 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000000151 deposition Methods 0.000 description 5
- 238000003795 desorption Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- -1 salt ions Chemical class 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/10—Obtaining alkali metals
- C22B26/12—Obtaining lithium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/056—Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a nondestructive recovery process of a powdery adsorbent for lithium extraction from brine, which can ensure that the powdery adsorbent is recovered in a nondestructive manner in the process of lithium extraction from brine and enters the process of lithium extraction from brine again, so that the powdery adsorbent is conveyed in the process of lithium extraction from brine in a nondestructive manner, and circulation is completed. The device creatively constructs a brine lithium extraction circulating device with the powdery adsorbent capable of being recovered without damage through the improvement and the layout of the equipment structure on the basis of the existing equipment, and has simple structure and market potential of large-scale application. The nondestructive circulating system of the powdery adsorbent for lithium extraction from brine is also provided, the process requirements of the powdery adsorbent particle interface chemistry and the physics in the nondestructive recovery of the powdery adsorbent for lithium extraction from brine are met, the powdery adsorbent particles cannot be crushed in the long-time mixing process of brine, and the accumulation or blockage cannot occur in the transportation process.
Description
Technical Field
The invention belongs to the technical field of lithium extraction from brine, and particularly relates to a nondestructive recovery process, a nondestructive recovery device and a nondestructive circulation system of a powdery adsorbent for lithium extraction from brine.
Background
The lithium extraction from brine by using a belt filter combined with an adsorption method has been extensively explored by the inventor group. According to the invention, a traditional belt filter is modified, and a solid-liquid separation zone, a salt washing zone and a desorption zone which are sequentially arranged along the advancing direction of filter cloth are formed on the filter cloth according to different mechanisms arranged above the filter cloth; a mixed adsorption tank is arranged above the solid-liquid separation zone, brine and an adsorbent are mixed in the mixed adsorption tank, and are released onto filter cloth after being adsorbed for a period of time, and the adsorbent is separated from the brine and is prepared into a filter cake; in a salt washing area, the salt washing liquid is used for eluting ions except lithium on the filter cake; in the desorption zone, the desorption solution elutes lithium ions from the filter cake.
Because the whole salt washing process is carried out in the dynamic operation process of the filter cloth, the contact time of the salt washing liquid and the adsorbent is short, the salt washing liquid can take away salt ions to the maximum extent and lithium ions to the minimum extent through the adsorbent, and the purpose of 'throwing salt and keeping lithium' is achieved; because the salt ions which are weakly combined with the adsorbent are eluted firstly in the salt washing area and the lithium ions which are strongly combined with the adsorbent are eluted in the desorption area, the separation of the salt and the lithium is realized to the maximum extent.
One key point of extracting lithium from brine by using the method is that the powdery adsorbent (such as a powdery aluminum adsorbent) is adopted to realize 'homogeneous adsorption' of the adsorbent to brine, and in order to save cost, the powdery adsorbent needs to be conveyed into a mixed adsorption tank again after desorption and mixed with brine again for adsorption.
For example, chinese utility model patent publication No. CN213221207U discloses a method for recovering a powdery adsorbent at the tail end of a belt filter, in which a filter cake on the belt filter is collected into an adsorbent recovery tank at the tail end of the belt filter, and then the filter cake is sent into a mixed adsorption mechanism of the belt filter for recycling; the adsorbent can also be continuously conveyed to the mixed adsorption mechanism by the adsorbent conveying mechanism in the collection process.
Also, as disclosed in chinese utility model publication No. CN216946302U, an adsorbent recycling device for a belt filter is disclosed, which comprises a mixing tank disposed at the tail end of a main body of the belt filter to receive and disperse an adsorbent cake from the main body of the belt filter into a suspension; the device also comprises a gas-liquid separation processing assembly, wherein the feed end of the gas-liquid separation processing assembly is communicated with the mixing tank through a circulating conveying connecting piece, and the discharge end of the gas-liquid separation processing assembly is communicated with a mixing adsorption tank arranged at the head end of the main body with the filter. The adsorbent suspension in the mixing tank is conveyed to the mixing adsorption tank by the circulating conveying connecting piece, and the gas-liquid separation treatment part generates negative pressure in the conveying process to ensure continuous conveying of the adsorbent suspension.
In the prior art, the recovery modes of the powdery adsorbent are generally two, one is that CN213221207U adopts a traditional closed pipeline and a pumping mode, and the other is that CN216946302U adopts a closed pipeline and a negative pressure mode; however, the particle size of the powdered adsorbent is about 100 microns, the structure is very fragile, and the structure is damaged by the pumping mode; meanwhile, the density of the powdery aluminum adsorbent is about 2.5g/cm3And the deposition is easy to occur in the closed pipeline, so that the loss of the powdery adsorbent can be caused, the pipeline can be blocked, and the inconvenience in cleaning the pipeline is increased.
The powdery adsorbent is a key raw material for extracting lithium from brine, and the investment cost is high, so that how to recover the powdery adsorbent without damage is a problem to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a nondestructive recovery process and a nondestructive recovery device for a powdery adsorbent for lithium extraction from brine, and the nondestructive recovery process and the nondestructive recovery device can realize nondestructive and complete recovery of the powdery adsorbent for lithium extraction from brine. Still another object of the present invention is to provide a non-destructive circulation system of a powdery adsorbent for lithium extraction from brine, which can realize non-destructive circulation of the powdery adsorbent between the head end and the tail end of a belt filter.
Specifically, the nondestructive recovery process of the powdery adsorbent for lithium extraction from brine comprises the following steps:
(1) Collecting the powdery adsorbent at the tail end of the belt filter;
(2) And conveying the collected powdery adsorbent to a mixed adsorption tank at the head end of the belt filter by using a lifter.
The invention abandons the recovery mode of pumping or sucking the powdery adsorbent in negative pressure in the closed pipeline in the prior art, but creatively utilizes the elevator to carry, and the open type conveying mode of the elevator can not only not destroy the structure of the powdery aluminum adsorbent, but also avoid the problems of deposition and blockage which can occur in the closed pipeline conveying, thereby realizing the lossless and complete recovery of the powdery adsorbent. By adopting the nondestructive recovery process, the powdery adsorbent can be recycled for thousands of times only by adding the powdery adsorbent into the mixing adsorption tank once, so that the cost of the powdery adsorbent is reduced, the trouble of adding the adsorbent is avoided, and the overall production efficiency is improved.
In the nondestructive recovery process of the powdery adsorbent for lithium extraction from brine, in the step (1), the powdery adsorbent is separated from a belt filter in at least one mode of scraping or washing;
in the step (2), the powdery adsorbent is separated from the hoister by at least one of scraping and washing;
the water washing is brine washing.
When solid-liquid separation is carried out on the mixture of the powdery adsorbent and brine at the head end of the belt filter, the mixture is driven by a vacuumizing mechanism, the powdery adsorbent left on the belt filter is compressed into a filter cake with a compact structure, and the powdery adsorbent is difficult to be completely separated from the belt filter only under the action of gravity; the present invention thus facilitates complete separation of the powdered sorbent from the belt filter by at least one of scraping or washing with water.
Although the powdery adsorbent is not compressed on the hoister, the powdery adsorbent is difficult to be completely separated from the hoister only by the action of gravity because of small particle size, so that a corresponding separation promoting means is also required, and the scraping or water washing is effective.
The water washing is preferably brine washing, on one hand, brine resources are sufficient, other water resources are not required to be wasted, and other impurities can be avoided from being introduced; on the other hand, the powdery adsorbent is mixed with the brine before entering the mixed adsorption tank, so that the mixing time of the powdery adsorbent and the brine is prolonged, the powdery adsorbent can quickly reach an adsorption saturation state, and the lithium extraction efficiency is improved.
The utility model provides a lithium is carried with harmless recovery unit of likepowder adsorbent to brine, this harmless recovery unit includes:
the head end of the lifter is arranged below the tail end of the belt filter to receive the powdery adsorbent from the belt filter, and the tail end of the lifter is arranged above the mixed adsorption tank to convey the powdery adsorbent to the mixed adsorption tank;
the first adsorbent collecting mechanism is arranged at the tail end of the belt filter and is used for separating the powdery adsorbent from the belt filter and dropping the powdery adsorbent onto the elevator;
and the second adsorbent collecting mechanism is arranged at the tail end of the lifting machine and is used for separating the powdery adsorbent from the lifting machine to fall into the mixed adsorption tank.
The lossless recovery device can realize the lossless recovery process. The first adsorbent collecting mechanism and the second adsorbent collecting mechanism which are arranged at the head end and the tail end of the hoister are respectively used for promoting the powdery adsorbent to be separated from the belt filter and the hoister.
In the nondestructive recovery device for the powdery adsorbent for lithium extraction from brine, the belt filter comprises a frame and filter cloth arranged on the frame in a reciprocating and rotating manner, the first adsorbent collecting mechanism comprises a material blocking member opposite to the tail end of the belt filter, the top end of the material blocking member is higher than the top surface of the filter cloth, and the bottom end of the material blocking member extends to the elevator;
the frame on still set firmly scrape the material spare, should scrape the material spare and be used for scraping the likepowder adsorbent on the filter cloth surface after the gyration.
The belt filter transports the desorbed powdery adsorbent (in a filter cake state) to the tail end of the belt filter, when the filter cloth rotates at the tail end of the belt filter, the filter cake is separated from the filter cloth and falls onto the elevator under the action of gravity, and the material blocking part opposite to the tail end of the belt filter is used for guiding the powdery adsorbent to the elevator, so that the powdery adsorbent is prevented from scattering out during rotation of the filter cloth.
After the filter cloth rotates, the powdery adsorbent which is not separated from the filter cloth is still stored on the surface of the filter cloth, and the scraping piece is used for scraping the part of the powdery adsorbent so as to avoid the loss of the adsorbent.
In the nondestructive recovery device for the powdery adsorbent for lithium extraction from brine, at least one tensioning roller for tensioning filter cloth is rotatably connected to the frame, and the scraping part is arranged at the downstream of the first tensioning roller after the filter cloth rotates;
the frame on still be equipped with and be in the guide spare of scraping material below, this guide spare is relative with this material stopping piece and is the contained angle setting, be formed with the adsorbent whereabouts mouth that is in the lifting machine top between guide spare and the material stopping piece.
The filter cloth back is usually located to first tensioning roller after the filter cloth gyration, and when this tensioning roller, the traffic direction of filter cloth changes, and the filter cloth bend and tensioning roller's extrusion all can make the loose of being connected between the likepowder adsorbent who remains on the filter cloth and the filter cloth become, strikes off the piece this moment and can scrape likepowder adsorbent more fully down.
The powdery adsorbent scraped by the scraping piece falls onto the lifting machine from the adsorbent falling port under the guide of the material guide piece, so that the falling of the powdery adsorbent is more concentrated instead of being dispersed on the bearing surface of the whole lifting machine, and convenience is brought to the subsequent separation of the powdery adsorbent and the lifting machine.
Because the particle diameter of likepowder adsorbent is less and the structure is comparatively fragile, if all rely on scraping the material piece and strike off, can lead to partly likepowder adsorbent structure to be damaged. In order to solve the problems, in the nondestructive recovery device for the powdery adsorbent for lithium extraction from brine, the rack is further provided with a first spraying part, and the first spraying part is at least used for spraying brine on the surface of the filter cloth between the first tensioning roller after the tail end of the belt filter and the filter cloth rotate so as to flush down the powdery adsorbent.
So can adopt the washing and strike off the likepowder adsorbent on two kinds of modes collect the filter cloth simultaneously, can not only avoid likepowder adsorbent structure damaged, the washing not only can wash down the likepowder adsorbent on filter cloth surface in addition, still can wash down the likepowder adsorbent that the adhesion was on keeping off material piece and guide spare in the lump for likepowder adsorbent's recovery is more complete.
In the above nondestructive recovery device for the powdery adsorbent for lithium extraction from brine, the elevator is a continuous elevator, the continuous elevator comprises a base and a conveying belt which runs on the base in a reciprocating rotation manner, a plurality of lifting partition plates are arranged on the surface of the conveying belt at intervals, and striker plates on two sides of the conveying belt are fixedly arranged on the base.
The continuous elevator can continuously and completely receive the powdery adsorbent from the belt filter without being influenced by the filter cake interval on the filter cloth; more preferably, the lifting machine be Z type continuous type lifting machine, Z type continuous type lifting machine can realize that powdered adsorbent carries in a station formula between band filter and the mixed adsorption tank, has avoided transporting the adsorbent loss that leads to.
Meanwhile, the height of the mixed adsorption tank is higher than that of the tail end of the belt filter, the elevator conveys the powdery adsorbent from a low position to a high position, and in order to prevent the adsorbent on the conveying belt from falling back in the conveying process to influence the conveying efficiency and further influence the mixed adsorption of the brine and the adsorbent, the continuous elevator is provided with a material baffle plate and a lifting baffle plate, and the lifting baffle plate plays a role in assisting lifting so as to ensure that the powdery adsorbent is continuously and effectively conveyed into the mixed adsorption tank; the material baffle plate and the lifting partition plate are matched to ensure that the mixture of the adsorbent and the filter cloth washing water does not slide off or leak out in the lifting process.
Preferably, the height of the lifting partition plates is 5-20cm, and the interval between the lifting partition plates is 10-50cm. And adjusting according to the content of lithium ions in the actual brine and the difficulty of lithium extraction. The height of the lifting partition plate is too low, so that the phenomenon that the mixture of the adsorbent and filter cloth washing water does not slide in the lifting process cannot be guaranteed; and the too high operation cost of promotion baffle on the one hand is higher, and on the other hand still can lead to the mixture of adsorbent and filter cloth sparge water to remain on the too high promotion baffle surface, influences the recovery of adsorbent.
In the above nondestructive recovery device for powdery adsorbent for lithium extraction from brine, the second adsorbent collecting mechanism comprises a collecting hopper arranged between the elevator and the mixing adsorption tank, and a second spraying part for spraying brine to the rotary conveying belt to flush the powdery adsorbent is arranged in the collecting hopper.
In the nondestructive recovery device for the powdery adsorbent for lithium extraction from brine, the complete unloading of the conveyer belt is ensured by the matching of the collecting hopper of the second adsorbent collecting mechanism and the second spraying piece, and possible adsorbent residues on the conveyer belt and the lifting partition plate are thoroughly removed.
A nondestructive circulating system of a powdery adsorbent for lithium extraction from brine comprises any one nondestructive recovery device;
the device also comprises a mixing adsorption tank, wherein a stirring mechanism is arranged in the mixing adsorption tank, and the rotating speed of the stirring mechanism is 20-60 r/min.
In the mixing adsorption tank, the stirring mechanism is used for not only fully mixing the powdery adsorbent with the brine, but also preventing the adsorbent from sinking; in order to ensure that the structure of the adsorbent is not damaged by stirring of the stirring mechanism and ensure the mixing efficiency, the rotating speed of the stirring mechanism can not be too high or too low, the experiment of the invention finds that the rotating speed is kept between 20 and 60r/min to be ideal, and the invention can simultaneously meet the process requirements of the adsorbent brine for extracting lithium in two aspects of chemistry (full mixing) and physics (without damaging the structure of the powdery adsorbent).
Furthermore, the bottom of the mixed adsorption tank is conical, a discharge pipeline is arranged at a discharge opening at the bottom point of the conical shape, the discharge pipeline and the surface of the belt filter form an included angle of 45-90 degrees, and a valve for controlling the on-off of the pipeline is arranged on the discharge pipeline.
The conical bottom is convenient for the adsorbent to enter the blanking pipeline through the blanking port without depositing in the mixing adsorption tank; and when the included angle between the blanking pipeline and the surface of the belt filter is set to be 45-90 degrees, the adsorbent cannot be deposited in the blanking pipeline with shorter length, and the blanking can be carried out smoothly.
The valve arranged on the blanking pipeline is used for controlling the retention time of the brine and the adsorbent in the mixed adsorption tank and the liquid level in the mixed adsorption tank, and the preferred retention time is 5-30 minutes.
The nondestructive circulating system utilizes the nondestructive recovery device to realize the nondestructive, continuous and complete recovery of the adsorbent in the tail end of the belt filter and the mixed adsorption tank, and utilizes the mixed adsorption tank to realize the complete, nondestructive, continuous and smooth operation of the adsorbent between the mixed adsorption tank and the head end of the belt filter, thereby realizing the nondestructive circulation of the powdery adsorbent, and the adsorbent can circulate at least 1 ten thousand circles between the mixed adsorption tank and the belt filter, greatly improving the efficiency of extracting lithium from brine, and having larger market application prospect.
Compared with the prior art, the invention has the advantages that:
(1) The invention abandons the recovery mode of pumping or sucking the powdery adsorbent by negative pressure in the closed pipeline in the prior art, and creatively utilizes the elevator to carry out the transportation, and the open transportation mode of the elevator can not damage the structure of the powdery aluminum adsorbent, but also avoid the problems of deposition and blockage generated in the closed pipeline transportation, thereby realizing the lossless and complete recovery of the powdery adsorbent. By adopting the nondestructive recovery process, the powdery adsorbent can be recycled for thousands of times only by adding the powdery adsorbent into the mixing adsorption tank once, so that the cost of the powdery adsorbent is reduced, the trouble of adding the adsorbent is avoided, and the overall production efficiency is improved.
(2) In the nondestructive recovery process of the powdery adsorbent for lithium extraction from brine, at least one of scraping and washing is adopted to promote the separation of the adsorbent from a belt filter or a lifter, so that the recovery rate of the adsorbent is further improved; the adsorbent is preferably washed by brine, so that on one hand, brine resources are sufficient, other water resources are not wasted, and other impurities can be prevented from being introduced; on the other hand, the powdery adsorbent is mixed with brine before entering the mixed adsorption tank, so that the mixing time of the powdery adsorbent and the brine is prolonged, the powdery adsorbent can quickly reach an adsorption saturation state, and the lithium extraction efficiency is improved.
(3) Because the particle size of the powdery adsorbent is small and the structure is fragile, if the powdery adsorbent is scraped by the scraping piece, part of the powdery adsorbent is damaged; therefore, the first spraying part is arranged on the rack and is at least used for spraying brine on the surface of the filter cloth between the tail end of the belt filter and the first tensioning roller after the filter cloth rotates so as to flush the powdery adsorbent down, so that the powdery adsorbent on the filter cloth can be collected by adopting two modes of washing and scraping, the structure damage of the powdery adsorbent can be avoided, and the washing can flush the powdery adsorbent on the surface of the filter cloth and can flush the powdery adsorbent adhered to the material blocking part and the material guide part together, so that the powdery adsorbent can be recovered more completely.
(4) In the invention, because the height of the mixed adsorption tank is higher than that of the tail end of the belt filter, the elevator conveys the powdery adsorbent from a low position to a high position, and in order to prevent the adsorbent on the conveying belt from falling back in the conveying process to influence the conveying efficiency and further influence the mixed adsorption of brine and the adsorbent, the continuous elevator is provided with the material baffle plate and the lifting baffle plate, and the lifting baffle plate plays a role in assisting lifting so as to ensure that the powdery adsorbent is continuously and effectively conveyed into the mixed adsorption tank; the material baffle plate and the lifting partition plate are matched to ensure that the mixture of the adsorbent and the filter cloth washing water does not slide off or leak out in the lifting process.
(5) In the nondestructive circulating system of the powdery adsorbent for extracting lithium from brine, the stirring mechanism in the mixing adsorption tank is used for not only fully mixing the powdery adsorbent with the brine, but also preventing the adsorbent from sinking to the bottom; in order to prevent the structure of the adsorbent from being damaged by the stirring of the stirring mechanism and ensure the mixing efficiency, the rotating speed of the stirring mechanism can not be too high or too low, the invention finds that the rotating speed is kept between 20 and 60r/min to be ideal, and can simultaneously meet the process requirements of the adsorbent brine for lithium extraction in the aspects of chemistry (full mixing) and physics (without damaging the structure of the powdery adsorbent).
(6) In the nondestructive circulation system of the powdery adsorbent for lithium extraction from brine, the bottom of a mixed adsorption tank is conical, a blanking pipeline is arranged at a blanking port at the bottom of the conical bottom, the blanking pipeline and the surface of a belt filter form an included angle of 45-90 degrees, and a valve for controlling the on-off of the pipeline is arranged on the blanking pipeline; the conical bottom is convenient for the adsorbent to enter the blanking pipeline through the blanking port and not to deposit in the mixed adsorption tank; and when the included angle between the blanking pipeline and the surface of the belt filter is set to be 45-90 degrees, the adsorbent cannot be deposited in the blanking pipeline with shorter length, and the blanking can be carried out smoothly.
(7) The lossless circulation system utilizes the lossless recovery device to realize lossless, continuous and complete recovery of the adsorbent in the tail end of the belt filter and the mixed adsorption tank, and utilizes the mixed adsorption tank to realize complete, lossless, continuous and smooth operation of the adsorbent between the mixed adsorption tank and the head end of the belt filter, so that lossless circulation of the powdery adsorbent is realized, the adsorbent can circulate for at least 1 ten thousand circles between the mixed adsorption tank and the belt filter, the efficiency of extracting lithium from brine is greatly improved, and the lossless circulation system has a wide market application prospect.
Drawings
FIG. 1 is a schematic structural diagram of a nondestructive recovery device of powdery adsorbent for lithium extraction from brine according to the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a schematic view of another angle of FIG. 1;
FIG. 4 is a side view schematic of the structure of FIG. 1;
FIG. 5 is a schematic view of another angle of FIG. 1;
fig. 6 is a schematic view of the hoist of fig. 1;
FIG. 7 is a schematic view of another angle of FIG. 6;
FIG. 8 is a schematic view of the belt filter of FIG. 1;
FIG. 9 is an enlarged view of a portion of FIG. 8;
FIG. 10 is a schematic view of the structure of the hybrid adsorption mechanism of FIG. 1;
FIG. 11 is a side view schematic of the structure of FIG. 10;
FIG. 12 is a schematic structural view of another embodiment of FIG. 10;
FIG. 13 is a schematic view of the construction of the hybrid adsorption tank of FIG. 1;
fig. 14 is a schematic top view of the structure of fig. 13.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.
Example 1
As shown in fig. 1, the nondestructive recovery process of the powdery adsorbent for lithium extraction from brine in this embodiment includes the following specific steps:
(1) Collecting the powdery adsorbent at the tail end of the belt filter 1;
(2) The collected powdery adsorbent is transported to the mixing adsorption tank 31 at the head end of the belt filter 1 by the elevator 2.
The lossless recovery process is realized by a lossless recovery device shown in fig. 1 to 5, the lossless recovery device includes a hoist 2, the head end of the hoist 2 is arranged below the tail end of the belt filter 1 to receive the powdery adsorbent from the belt filter 1, and the tail end of the hoist 2 is arranged above the mixed adsorption tank 31 to convey the powdery adsorbent to the mixed adsorption tank 31.
In this embodiment, one hoisting machine 2 may be disposed between the tail end and the head end of the same belt filter 1, or may be disposed between the tail end of one belt filter 1 and the head end of another belt filter 1 as shown in fig. 1, so that the two belt filters 1 may be connected in series by using the two hoisting machines 2, and the connection method occupies a small space.
For realizing the adsorbent and taking between filter 1 and lifting machine 2, the harmless transfer between lifting machine 1 and the mixed adsorption tank 31, this embodiment has set up first adsorbent collection mechanism 4 and second adsorbent collection mechanism 5 respectively at the head and the tail both ends of lifting machine 2, and wherein, this first adsorbent collection mechanism 4 is used for making likepowder adsorbent and taking filter 1 to separate and fall to lifting machine 2 on, and this second adsorbent collection mechanism 5 is used for making likepowder adsorbent and lifting machine 2 separate and fall into in the mixed adsorption tank 31.
As shown in fig. 8, the belt filter 1 includes a frame 11 and a filter cloth 13 which is reciprocatingly and rotatably disposed on the frame 11, and at least one tension roller 12 for tensioning the filter cloth 13 is rotatably connected to the frame 11.
As shown in fig. 9, the first adsorbent collecting mechanism 4 includes a material blocking member 41 disposed at the tail end of the belt filter 1, a first spraying member 45 for spraying brine on the surface of the filter cloth 13 between the first tensioning roller 12 and the tail end of the belt filter 1 after the rotation of the filter cloth 13 to flush the powdery adsorbent, a material scraping member 42 for scraping the powdery adsorbent on the surface of the filter cloth 13 after the rotation, and a material guiding member 43 disposed opposite to the material blocking member 41 and at an included angle, wherein an adsorbent falling opening 44 located above the elevator 2 is formed between the material guiding member 43 and the material blocking member 41. The method comprises the following specific steps:
the material blocking part 41 is opposite to the tail end of the belt filter 1, the top end of the material blocking part 41 is higher than the top surface of the filter cloth 13, meanwhile, the rack 11 is also rotatably connected with a descending positioning roller 14 at the tail end of the belt filter 1, the plane where the descending positioning roller 14 is located is lower than the top surface of the rack 11, after the filter cloth 13 bypasses the descending positioning roller 14, the height where the top surface of the filter cloth 13 is located is also reduced, and the material blocking operation is implemented by the auxiliary material blocking part 41; the bottom end of the material blocking member 41 extends toward the lift 2 to guide the adsorbent onto the lift 2.
The filter cloth 13 transports the lithium-desorbed powdery adsorbent in a filter cake state to the tail end of the belt filter 1, and at this time, the powdery adsorbent needs to be completely recovered: the filter cake separates from the filter cloth 13 and falls under the action of gravity, and the material blocking member 41 arranged at the tail end of the belt filter 1 guides the powdery adsorbent to the elevator 2, so that the powdery adsorbent is prevented from scattering out when the filter cloth 13 rotates.
When filter cloth 13 gyration back process first tensioning roller 12, the traffic direction of filter cloth 13 changes, the bend of filter cloth 13 and the extrusion of tensioning roller 12 all can make the likepowder adsorbent who remains on filter cloth 13 and filter cloth 13 between be connected loosely, consequently this embodiment will scrape the low reaches of material piece 42 setting at filter cloth 13 gyration back first tensioning roller 12, scrape material piece 42 this moment and can scrape powdered adsorbent more fully down, retrieve the powdered adsorbent portion of the not separation with it that filter cloth 13 surface still exists.
A material guide member 43 is further arranged below the material scraping member 42, an adsorbent falling port 44 is formed between the material guide member 43 and the material blocking member 41, and the falling of the powdery adsorbent is more concentrated instead of being dispersed on the bearing surface of the whole elevator 2 through the guide of the falling port 44, so that the distribution of the adsorbent on the elevator 2 is more uniform, and the nondestructive recovery of the adsorbent is ensured; and also provides convenience for the separation of the subsequent powdery adsorbent from the lifter 2.
Because the particle size of the adsorbent particles is small and the structure is fragile, the scraper 42 cannot scrape off all the adsorbent on the surface of the filter cloth 13 without damaging the adsorbent particles. Therefore, the first spraying member 45 is further provided in this embodiment to ensure that the adsorbent particles on the surface of the filter cloth 13 between the tail end of the belt filter 1 and the filter cloth 13 after the filter cloth 13 rotates are all recovered, and meanwhile, the impact force of the water washing can give certain power to the adsorbent particles, so that the adsorbent particles are prevented from being adhered to the material guiding member 43 and the material blocking member 41.
The spraying objects of the first spraying members 45 can be parts which can contact with the adsorbent, such as the material guide member 43 and the material blocking member 41, besides the filter cloth 13, and the more the number of the first spraying members 45 is, the better the number is, so as to fully recover the adsorbent.
The first sprinkling member 45 may be on the surface or the back of the filter cloth 13 as long as the position where the first sprinkling member 45 faces the filter cloth 13 is ensured. Since the filter cloth 13 itself has pores, it is preferable to dispose the first showering member 45 on the back surface of the filter cloth 13 so that a part of the adsorbent adhered to the back surface of the filter cloth 13 by passing through the pores from the surface of the filter cloth 13 can be washed down together.
The first adsorbent collecting mechanism 4 of the present embodiment combines the separation mode of washing and scraping two kinds of adsorbent particles, and ensures the lossless collection of the adsorbed powdery adsorbent.
Fig. 6 and 7 show a hoist 2 of the present embodiment, and the hoist 2 of the present embodiment is a Z-type continuous hoist 2. The continuous type lifting machine 2 is not influenced by the filter cake interval on the filter cloth 13, one-stop continuous conveying of the powdery adsorbent between the belt filter 1 and the mixed adsorption tank 31 can be realized, and adsorbent loss caused by transfer is avoided.
The continuous type elevator 2 comprises a conveying belt 21 which rotates in a reciprocating mode, and as the conveying mode of the elevator 2 is low to high, in order to prevent the adsorbent on the conveying belt 21 from falling back in the conveying process to influence the conveying efficiency and further influence the mixed adsorption of brine and the adsorbent, a material baffle plate 26 and a lifting baffle plate 22 are arranged on the continuous type elevator 2, and the lifting baffle plate 22 plays a role in auxiliary lifting to ensure that the powdery adsorbent is continuously and effectively conveyed into the mixed adsorption tank 31; the material baffle 26 and the lifting partition plate 22 are matched to ensure that the mixture of the adsorbent and the filter cloth 13 flushing water does not slide off or leak out in the lifting process.
In this embodiment, the height of the lifting partition 22 is 10cm, and the interval between adjacent lifting partitions 22 is 20cm.
In this embodiment, 2 lifting machines include the conveyer section 25 of receiving machine section 23, blanking machine section 24 and UNICOM receiving machine section 23 and blanking machine section 24, and wherein, the below of 1 tail end of a belt filter is located to the receiving machine section 23 of this lifting machine 2, and the top of the mixed adsorption apparatus of 3 of another belt filter 1 is located to blanking machine section 24.
Preferably, the blanking machine section 24 of the present embodiment is disposed in parallel with the mixing and adsorbing mechanism 3, and the length of the blanking machine section 24 is not less than 0.3 m.
As shown in fig. 7, the second adsorbent collecting mechanism 5 is provided at the rear end of the lifter 2 for separating the powdery adsorbent from the lifter 2 to fall into the mixing adsorption tank 31. The second adsorbent collecting mechanism 5 includes a collecting hopper 51 disposed between the elevator 2 and the mixing adsorption tank 31, and a second spraying member 52 for spraying brine to the revolving conveyor belt 21 to wash off the powdery adsorbent is disposed in the collecting hopper 51. Since the conveyer belt 21 conveys the mixture of the adsorbent and the brine, the conveyer belt 21 is preferably made of a non-porous material such as a belt in order to prevent the adsorbent from being lost, and therefore the second spraying member 52 must be disposed on the surface of the conveyer belt 21.
Through the cooperation of collecting hopper 51 and the second piece 52 that sprays of second adsorbent collection mechanism 5, guarantee that conveyer belt 21 thoroughly unloads, thoroughly clear away conveyer belt 21 and promote the residue that probably appears on the baffle 22, collecting hopper 51 prevents that the second from spraying the splashing that probably causes when 52 washes, guarantees that the whole recovery of adsorbent can also reduce the pollution problem that probably appears.
And finally, all the adsorbents in the collecting hopper 51 enter the mixing adsorption tank 31, and a new lithium extraction process is started after the adsorbents are fully mixed with the brine, and the cycle is repeated.
The working principle of the embodiment is as follows:
firstly, the adsorbent on the filter cloth 13 runs to the tail end of the belt filter 1 after undergoing a cycle of brine lithium extraction process, when the filter cloth 13 rotates, an adsorbent filter cake is automatically separated from the filter cloth 13 and enters the adsorbent falling port 44 along the material blocking part 41, the adsorbent which is not automatically separated is further separated from the filter cloth 13 through the combined action of the first spraying part 45 and the material scraping part 42, so that the adsorbent which is completely adsorbed is collected without damage, and all the adsorbent falls onto the elevator 2.
Then, under the cooperation of lifting partition plate 22 and striker plate 26, lifting machine 2 carries the mixture of adsorbent and brine to the top of mixing adsorption tank 31 continuously, and when conveyer belt 21 revolves, the mixture of most adsorbent and brine is automatic to get into mixing adsorption tank 31 through collecting hopper 51 in, and partial adsorbent that still adsorbs on conveyer belt 21, lifting partition plate 22 and striker plate 26 is then washed to mixing adsorption tank 31 by the brine that is sprayed out by second shower 52 in to realize the harmless, whole transfer of adsorbent between lifting machine 2 and mixing adsorption tank 31.
And after the adsorbent entering the mixed adsorption tank 31 is fully mixed with the brine, a new cycle of lithium extraction process of the brine is continuously completed on the belt filter 1, and the tail end of the belt filter 1 is recycled in a reciprocating cycle without damage.
Example 2
The nondestructive circulation system of the powdery adsorbent for lithium extraction from brine comprises the nondestructive recovery device as in embodiment 1, and a mixed adsorption mechanism 3. This mix adsorption apparatus 3 is including mixing the adsorption tank 31, and this mix adsorption tank 31 is fixed on operation platform 32 and is in the area and filters 1 head end top, is equipped with rabbling mechanism 33 in mixing the adsorption tank 31.
In this embodiment, the stirring mechanism 33 is used not only to sufficiently mix the powdery adsorbent with the brine but also to prevent the adsorbent from settling in the mixing and adsorbing tank 31. In order to prevent the structure of the adsorbent from being damaged by the stirring mechanism 33 and to ensure the mixing efficiency, the rotation speed of the stirring mechanism 33 may be neither too fast nor too slow; therefore, in the present embodiment, the rotation speed of the stirring mechanism 33 is set to be 20 to 60r/min, more preferably 30r/min; at this speed, the stirring mechanism 33 can satisfy the process requirements of both chemistry (thorough mixing) and physics (without destroying the powder adsorbent structure) for lithium extraction from the adsorbent brine.
To further ensure that the adsorbent in the mixing adsorption tank 31 can completely reach the belt filter 1, as shown in fig. 13 and 14, in this embodiment, the bottom of the mixing adsorption tank 31 is conical, a discharge pipe 35 is disposed at the discharge port 34 at the bottom of the conical, and the conical bottom facilitates the adsorbent to enter the discharge pipe 35 through the discharge port 34 without depositing in the mixing adsorption tank 31.
In this embodiment, the feeding pipe 35 and the surface of the belt filter 1 form an included angle of 45-90 degrees, and the feeding pipe 35 is provided with a valve 36 for controlling the on-off of the pipe. When the included angle between the blanking pipeline 35 and the surface of the belt filter 1 is set to be 45-90 degrees, the adsorbent cannot be deposited in the blanking pipeline 35 with short length, and blanking can be carried out smoothly. The valve 36 disposed on the discharging pipe 35 is used for controlling the retention time (5-30 minutes) of the brine and the adsorbent in the mixed adsorption tank 31 and the liquid level in the mixed adsorption tank 31.
The brine lithium extraction test was performed on example 2. The test method is as follows:
adding a powdery adsorbent and brine into the mixed adsorption tank 31, and operating the system until lithium ions in the brine are recovered to extract lithium from the brine for the 1 st time; the recycled adsorbent enters the mixed adsorption tank 31 again and is mixed with brine with the same mass as that of the 1 st time of brine lithium extraction until lithium ions in the brine are recycled to be the 2 nd time of brine lithium extraction; and by analogy, only the brine with the same mass is added for extracting lithium from the brine every time, and the adsorbent is not supplemented. And (3) counting and calculating the lithium recovery rate in the 1 st, 2 nd, 10 th and 1 st ten thousand times of lithium extraction from brine, wherein the test results are as follows:
TABLE 1 recovery of lithium from 1 st, 2 nd, 10 th and 1 st ten thousand brines
| Number of |
1 |
2 |
10 th time | Number 10000 times |
| Recovery rate | 93％ | 95％ | 94％ | 93％ |
As can be seen from table 1, in the present embodiment, the above nondestructive recovery device is used to realize the cycle of extracting lithium from brine by the adsorbent, and in the operation process of the system, the adsorbent particles realize a complete, nondestructive, continuous and unobstructed cycle process in the system. By adopting the nondestructive recovery system of the embodiment, the powdery adsorbent can be recycled for thousands of times only by adding the powdery adsorbent into the mixed adsorption tank 31 once.
Although corresponding terms are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. A nondestructive recovery process of a powdery adsorbent for lithium extraction from brine is characterized by comprising the following steps:
(1) Collecting the powdery adsorbent at the tail end of the belt filter (1);
(2) And conveying the collected powdery adsorbent to a mixed adsorption tank (31) at the head end of the belt filter (1) by using a lifting machine (2).
2. A non-destructive process for recovering a powdery adsorbent for lithium extraction from brine according to claim 1, wherein in step (1), the powdery adsorbent is separated from the belt filter (1) by at least one of scraping or washing with water;
in the step (2), the powdery adsorbent is separated from the lifter (2) by at least one of scraping and washing;
the water washing is brine washing.
3. The utility model provides a lithium is carried with harmless recovery unit of likepowder adsorbent to brine which characterized in that includes:
the head end of the lifter (2) is arranged below the tail end of the belt filter (1) to receive the powdery adsorbent from the belt filter (1), and the tail end of the lifter (2) is arranged above the mixed adsorption tank (31) to convey the powdery adsorbent to the mixed adsorption tank (31);
the first adsorbent collecting mechanism (4) is arranged at the tail end of the belt filter (1), and the first adsorbent collecting mechanism (4) is used for separating the powdery adsorbent from the belt filter (1) and dropping the powdery adsorbent onto the lifter (2);
and the second adsorbent collecting mechanism (5) is arranged at the tail end of the lifting machine (2), and the second adsorbent collecting mechanism (5) is used for separating the powdery adsorbent from the lifting machine (2) and enabling the powdery adsorbent to fall into the mixed adsorption tank (31).
4. The nondestructive recovery device of powdery adsorbent for lithium extraction from brine as claimed in claim 3, wherein the belt filter (1) comprises a frame (11) and a filter cloth (13) which is arranged on the frame (11) in a reciprocating and rotating manner, the first adsorbent collecting mechanism (4) comprises a blocking member (41) which is opposite to the tail end of the belt filter (1), the top end of the blocking member (41) is higher than the top surface of the filter cloth (13), and the bottom end of the blocking member (41) extends towards the lifter (2);
the machine frame (11) is also fixedly provided with a scraping piece (42), and the scraping piece (42) is used for scraping off the powdery adsorbent on the surface of the rotary filter cloth (13).
5. The nondestructive recovery device of powdery adsorbent for lithium extraction from brine as claimed in claim 4, wherein the frame (11) is rotatably connected with at least one tension roller (12) for tensioning the filter cloth (13), and the scraper (42) is disposed downstream of the first tension roller (12) after the filter cloth (13) rotates;
frame (11) on still be equipped with guide spare (43) that are in scraping material (42) below, this guide spare (43) just is the contained angle setting with this material blocking spare (41) is relative, be formed with adsorbent whereabouts mouth (44) that are in lifting machine (2) top between guide spare (43) and material blocking spare (41).
6. The nondestructive recovery device of powdery adsorbent for lithium extraction from brine as in claim 5, wherein the frame (11) is further provided with a first spraying member (45), and the first spraying member (45) is at least used for spraying brine on the surface of the filter cloth (13) between the tail end of the belt filter (1) and the first tensioning roller (12) after the filter cloth (13) rotates so as to flush down the powdery adsorbent.
7. The nondestructive recovery device of powdery adsorbent for lithium extraction from brine as claimed in claim 3, wherein the elevator (2) is a continuous elevator (2), the continuous elevator (2) comprises a base, a conveyor belt (21) running on the base in a reciprocating and rotating manner, a plurality of lifting partition plates (22) are arranged on the surface of the conveyor belt (21) at intervals, and the base is fixedly provided with baffle plates (26) at two sides of the conveyor belt.
8. The nondestructive recovery device of powdery adsorbent for lithium extraction from brine as in claim 7, wherein the second adsorbent collecting mechanism (5) comprises a collecting hopper (51) disposed between the elevator (2) and the mixing adsorption tank (31), and a second spraying member (52) for spraying brine to the revolving conveyor belt (21) to wash off the powdery adsorbent is disposed in the collecting hopper (51).
9. A nondestructive circulation system of powdery adsorbent for lithium extraction from brine, which is characterized by comprising the nondestructive recovery device of any one of claims 3 to 8;
the device also comprises a mixing adsorption tank (31), wherein a stirring mechanism (33) is arranged in the mixing adsorption tank (31), and the rotating speed of the stirring mechanism (33) is 20-60 r/min.
10. The nondestructive circulating system of powdery adsorbent for lithium extraction from brine as in claim 9, wherein the bottom of the mixed adsorption tank (31) is conical, a blanking pipeline (35) is arranged at a blanking port (34) at the bottom of the conical, the blanking pipeline (35) is arranged at an included angle of 45-90 degrees with the surface of the belt filter (1), and a valve (36) for controlling the on-off of the pipeline is arranged on the blanking pipeline (35).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210844930.XA CN115261639B (en) | 2022-07-18 | 2022-07-18 | Nondestructive recovery process, nondestructive recovery device and nondestructive circulation system of powdery adsorbent for extracting lithium from brine |
| CL2023001458A CL2023001458A1 (en) | 2022-07-18 | 2023-05-19 | Process, device and non-destructive recovery system of a powder adsorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210844930.XA CN115261639B (en) | 2022-07-18 | 2022-07-18 | Nondestructive recovery process, nondestructive recovery device and nondestructive circulation system of powdery adsorbent for extracting lithium from brine |
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| CN115261639A true CN115261639A (en) | 2022-11-01 |
| CN115261639B CN115261639B (en) | 2024-07-26 |
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| CN213221229U (en) * | 2020-07-07 | 2021-05-18 | 浙江衢州明德新材料有限公司 | Water distribution structure of belt filter for extracting lithium from brine |
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2022
- 2022-07-18 CN CN202210844930.XA patent/CN115261639B/en active Active
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB638745A (en) * | 1945-09-24 | 1950-06-14 | Union Oil Co | Adsorption process and apparatus |
| CN107949541A (en) * | 2015-08-28 | 2018-04-20 | 雅宝公司 | The method that lithium value is recycled from bittern containing lithium |
| CN205087512U (en) * | 2015-10-14 | 2016-03-16 | 大理正大有限公司 | Bucket elevator |
| CN205661972U (en) * | 2016-06-01 | 2016-10-26 | 广东美味源香料股份有限公司 | Material automatic lifting machine |
| CN108083301A (en) * | 2017-11-10 | 2018-05-29 | 江苏旌凯中科超导高技术有限公司 | The method that lithium is extracted from bittern using magnetic powder aluminium system lithium adsorbent |
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| CN115261639B (en) | 2024-07-26 |
| CL2023001458A1 (en) | 2024-01-05 |
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